xǐshǒujiān tài zāng, wèidào zhòng, páiduì cháng, shèbèi huài le, dōu kěyǐ huàn lìng yī gè

洗手间太脏、味道重、排队长、设备坏了，都可以换另一个。

If the restroom is too dirty, smells bad, has a long line, or has broken facilities, you can use another one.